If you talk to a handful of architects about the same project, you'll likely get a handful of different numbers, sometimes wildly different ones. It's tempting to assume the higher number reflects more talent, or the lower number reflects a better deal. In my experience, the real explanation is almost always simpler than that: the fees differ because the services differ.
Services, Not Talent, Drive the Number
Two architects can both tell you they'll "design your kitchen," and mean two completely different things by it. One version might be a basic floor plan layout with cabinetry shown in a simple elevation, nothing more. Another version might include full millwork details, material and hardware specifications, coordination of recessed and pendant lighting, plumbing fixture selection, sourcing trips with the client, and renderings to visualize the final result before it's built. Both of those are legitimately "kitchen design," and they are not remotely the same amount of work.
That same gap in scope shows up across an entire project, not just in one room. Whether an architect provides full construction documents or a bare-bones permit set, whether construction administration is included or left out entirely, whether interior selections are part of the service or something you're expected to handle separately, all of that adds up, and it's almost always the real reason one proposal costs meaningfully more or less than another.
Notoriety plays a role too, if you're hiring a well-known name, you're paying a premium tied to demand rather than necessarily to a difference in the underlying work. But for most residential projects, the services included in the fee explain the gap far more than anything else.
Roughly How Work Breaks Down Across a Project
It's worth having a general sense of how much effort goes into each phase of a project, since that shapes both fixed fee milestones and how hourly billing tends to land over time. Speaking roughly, and this will vary by project and by architect, schematic design tends to represent around 23 percent of the total work. Design development represents another 23 percent. Construction documents, the most detailed and technical phase, typically represents the largest share, around 33 percent. Construction administration rounds it out at roughly 23 percent.
Those numbers won't add up to a clean 100 percent, and that's fine, they're meant as a general guide rather than a precise formula. But understanding roughly where the effort concentrates helps explain why construction documents so often carry the largest portion of a fixed fee, and why cutting corners on that phase in particular tends to cause problems downstream during actual construction.
A Reasonable Range to Expect
For custom residential work, architecture fees, however they're structured, generally land somewhere between 10 and 20 percent of construction cost when you look at the total relative to project size. Ten percent tends to be closer to a baseline, and fees toward the higher end of that range usually reflect a more comprehensive scope of services, a larger and more experienced team, or both. The specific project scale matters too, a larger project usually settles toward a lower percentage than a smaller one, simply due to economy of scale.
What Actually Matters Most
At the end of the day, I don't think fee structure should be the deciding factor in who you hire. If you're comparing architects and you genuinely trust one of them more, that should outweigh a modest difference in their fee or even a difference in how that fee is structured. A project like this is a long relationship, often spanning years from first sketch to move-in, and that trust matters more than optimizing for a slightly lower number.
What I'd encourage instead is asking direct questions before you sign anything. Ask exactly what's included in the proposed fee and what would fall outside it as an additional service. Ask whether construction administration and full construction documents are part of the scope. Ask how interior selections are handled. Once you understand what you're actually being offered, comparing architects becomes a much more honest exercise, and the fee itself tends to make a lot more sense.